element matrix for three-dimensional Laplace s equation using four-node tetrahedral element

2D Heat Conduction(Laplace Equation) source code by using sparse technique in matlab.

解椭圆型方程的Matlab程序,可以用来求解拉普拉斯方程或泊松方程，对做数学模拟很有用-Solutions of Elliptic Equations Matlab program that can be used to solve the Laplace equation or the Poisson equation, mathematical simulation is useful to do